WMSIC Electronic Components

YJYCOIN YWLD2012-4R7K YWLD2012

ModelYWLD2012-4R7K
Package0805
BrandYJYCOIN
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
YJYCOIN YWLD2012-4R7K
Type
YJYCOIN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YJYCOIN
Electronic Component
YWLD2012-4R7K
Electronic Component
1
Package
0805
Electronic Component
SMD Inductor
Electronic Component
±10%
Electronic Component
0.034g
Inductor
4.7uH
Electronic Component
1
Electronic Component
BM0265571491
Current
520mA
Frequency
51MHz
Resistor(DCR)
559mΩ
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

YWLD2012-4R7K贴片电感产品概述

YWLD2012-4R7K是益嘉源(YJYCOIN)推出的一款0805封装(公制2012)小功率贴片电感,针对消费电子、小型电源及射频电路的滤波、储能需求设计,核心参数稳定且适配主流应用场景,是批量生产中高性价比的电感选型之一。

一、产品基本信息

YWLD2012-4R7K的型号编码清晰传递核心特性:

  • “2012”对应英制封装尺寸0805(长2.0mm×宽1.2mm),符合高密度PCB设计要求;
  • “4R7”表示标称电感值为4.7微亨(μH);
  • “K”代表电感精度为±10%,满足常规电路对参数一致性的需求。
    该产品属于绕线贴片电感,采用小型化绕制工艺,兼顾电气性能与空间利用率。

二、核心电气参数详解

1. 电感值与精度

标称电感值4.7μH,精度±10%(实际范围4.23μH~5.17μH),通过稳定绕线工艺控制,批量产品参数一致性偏差≤5%,可避免电路滤波特性波动。

2. 额定电流与功率损耗

  • 额定电流:520mA(连续工作电流),环境温度25℃下温升值≤40℃,符合IEC 60384-14标准;
  • 直流电阻(DCR):559mΩ,同规格中属于较低水平——500mA工作电流下损耗仅0.14W,有效降低电路发热,提升电源转换效率。

3. 品质因数(Q值)与自谐振频率(SRF)

  • Q值:[email protected],反映电感储能效率(Q=2πfL/R),说明在7.9MHz附近射频频段滤波性能优异;
  • 自谐振频率(SRF):51MHz,超过该频率电感呈容性,需注意应用频率低于51MHz以保证电感特性,避免谐振干扰。

三、封装与物理特性

YWLD2012-4R7K采用0805贴片封装,具备以下优势:

  1. 尺寸小巧:2.0mm×1.2mm×1.0mm,适配手机、智能手表等小型化设备的高密度PCB;
  2. 贴装兼容:符合IPC-J-STD-020标准,支持回流焊、波峰焊,焊接良率≥99.5%;
  3. 环保认证:通过RoHS 2.0及无卤认证,无铅焊接材料,满足绿色生产要求。

四、典型应用场景

结合电气参数,该电感适用于:

  1. 小型电源电路:手机、蓝牙耳机的DC-DC降压电路,储能滤波提升电压稳定性;
  2. 射频前端模块:蓝牙5.0、WiFi 2.4GHz模块的信号滤波,利用Q值适配7.9MHz频段需求;
  3. 消费电子控制板:遥控器、智能音箱的信号耦合电路,降低EMI干扰;
  4. 工业小型传感器:温度传感器接口电路的EMI滤波,适配低电流、小空间需求。

五、可靠性与选型参考

1. 可靠性保障

益嘉源对产品进行多项测试:

  • 高低温循环:-40℃~+85℃,1000次循环后电感值变化≤±5%;
  • 湿度测试:60℃/95%RH,1000小时后DCR变化≤±10%;
  • 振动测试:10Hz~2000Hz,2g加速度下2小时无开路短路。

2. 选型注意事项

  • 电流降额:连续电流建议≤400mA(降额23%),峰值电流≤364mA(降额30%),避免性能衰减;
  • 频率限制:应用频率需低于51MHz,高频场景需更换高SRF电感;
  • 功率预算:核算I²×R损耗,避免超过PCB散热能力。

YWLD2012-4R7K凭借稳定参数、小巧封装及高可靠性,成为消费电子、小型射频电路的实用选型,适配批量生产与多样化应用需求。

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